agentic-net-examples / accessibility-and-tagged-pdfs

---
name: accessibility-and-tagged-pdfs
description: C# examples for accessibility-and-tagged-pdfs using Aspose.PDF for .NET
language: csharp
framework: net10.0
parent: ../agents.md
---

# AGENTS - accessibility-and-tagged-pdfs

> **Accessibility and tagged PDFs** in PDF using C# / .NET -- **45** verified, compile-tested examples for **Aspose.PDF for .NET** 26.8.0. Each `.cs` file is a standalone, build-validated console example, generated and runtime-checked by an AI agent before publishing.

## Persona

You are a C# developer specializing in PDF processing using Aspose.PDF for .NET,
working within the **accessibility-and-tagged-pdfs** category.
This folder contains standalone C# examples for accessibility-and-tagged-pdfs operations.
See the root [agents.md](../agents.md) for repository-wide conventions and boundaries.

## Scope
- This folder contains examples for **accessibility-and-tagged-pdfs**.
- Files are standalone `.cs` examples stored directly in this folder.

## Required Namespaces

- `using Aspose.Pdf;` (43/45 files) ← category-specific
- `using Aspose.Pdf.LogicalStructure;` (34/45 files) ← category-specific
- `using Aspose.Pdf.Tagged;` (34/45 files) ← category-specific
- `using Aspose.Pdf.Text;` (5/45 files)
- `using Aspose.Pdf.Forms;` (2/45 files)
- `using Aspose.Pdf.Annotations;` (1/45 files)
- `using System;` (45/45 files)
- `using System.IO;` (44/45 files)
- `using System.Collections.Generic;` (6/45 files)
- `using System.Text.Json;` (2/45 files)
- `using System.Xml.Linq;` (2/45 files)
- `using System.Xml;` (1/45 files)
- `using System.Xml.Xsl;` (1/45 files)

## Common Code Pattern

Most files follow this pattern:

```csharp
using (Document doc = new Document("input.pdf"))
{
    // ... operations ...
    doc.Save("output.pdf");
}
```

## Files in this folder

| File | Title | Key APIs | Description |
|------|-------|----------|-------------|
| [add-actualtext-to-images](./add-actualtext-to-images.cs) | Add ActualText to Images for PDF Accessibility | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to attach an ActualText attribute to each image in a PDF using Aspose.Pdf's tagg... |
| [add-caption-note-to-figure](./add-caption-note-to-figure.cs) | Add Caption Note to Figure in Tagged PDF | `Document`, `ITaggedContent`, `FigureElement` | Demonstrates how to create a Figure element and attach a Note element as a caption within a tagge... |
| [add-custom-tag-to-paragraph](./add-custom-tag-to-paragraph.cs) | Add Custom Tag to Paragraph in Tagged PDF | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to create a tagged PDF, add a paragraph element, assign a custom tag name, and s... |
| [add-external-link-with-title-to-tagged-pdf](./add-external-link-with-title-to-tagged-pdf.cs) | Add External Link with Title to a Tagged PDF | `Document`, `ITaggedContent`, `LinkElement` | Demonstrates how to insert a clickable external URL into a PDF's tagged structure and set its Tit... |
| [add-internal-page-link-to-tagged-pdf](./add-internal-page-link-to-tagged-pdf.cs) | Add Internal Page Link to Tagged PDF | `Document`, `ITaggedContent`, `LinkElement` | Demonstrates how to create a /Link element in a tagged PDF that points to an internal page using ... |
| [add-note-element-to-paragraph](./add-note-element-to-paragraph.cs) | Add Note Element to Paragraph in Tagged PDF | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to create a note (footnote/endnote) element and attach it as a child of a paragr... |
| [add-page-break-to-tagged-pdf](./add-page-break-to-tagged-pdf.cs) | Add Page Break Element to Tagged PDF | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to insert a page‑break element into the logical structure tree of a tagged PDF u... |
| [add-placeholder-textbox-form-field-tagged](./add-placeholder-textbox-form-field-tagged.cs) | Add Placeholder TextBox Form Field with Tagged Structure | `Document`, `TextBoxField`, `Rectangle` | Loads an existing PDF, inserts a TextBox form field with placeholder text, creates a /Form logica... |
| [add-textbox-form-field-tagged-pdf](./add-textbox-form-field-tagged-pdf.cs) | Add TextBox Form Field and Tag It for Accessibility | `Document`, `Form`, `TextBoxField` | Demonstrates how to create a TextBox form field, register it in the AcroForm, and associate it wi... |
| [append-paragraph-actualtext-to-toci](./append-paragraph-actualtext-to-toci.cs) | Append Paragraph with ActualText to a TOCI Element | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to create a TOCI (Table of Contents Item) element in a tagged PDF, add a paragra... |
| [batch-convert-pdfs-to-tagged-pdfa](./batch-convert-pdfs-to-tagged-pdfa.cs) | Batch Convert PDFs to Tagged PDF/A with Auto‑Tagging | `Document`, `AutoTaggingSettings`, `PdfFormatConversionOptions` | Demonstrates how to process a folder of untagged PDFs, enable Aspose.Pdf auto‑tagging, convert ea... |
| [batch-pdfa1b-validation-xml-logs-dashboard](./batch-pdfa1b-validation-xml-logs-dashboard.cs) | Batch PDF/A-1B Validation with XML Logs and Compliance Dashb... | `Document`, `Validate`, `PdfFormat` | The example loads all PDF files in a folder, validates each against the PDF/A‑1B standard using A... |
| [batch-tag-pdfs-with-suffix](./batch-tag-pdfs-with-suffix.cs) | Batch Tag PDFs and Save with Suffix | `Document`, `AutoTaggingSettings`, `ITaggedContent` | Demonstrates how to process a folder of PDF files, enable automatic tagging, add missing structur... |
| [batch-validate-pdfs-summary-csv](./batch-validate-pdfs-summary-csv.cs) | Batch Validate PDFs and Generate Summary CSV | `Document`, `PdfFormat`, `Validate` | Demonstrates how to iterate through a folder of PDF files, validate each against PDF/A‑1B using A... |
| [check-pdf-ua-compliance-and-log](./check-pdf-ua-compliance-and-log.cs) | Check PDF/UA Compliance and Log Result | `Document`, `IsPdfUaCompliant` | Demonstrates loading a PDF with Aspose.Pdf, checking its PDF/UA accessibility compliance, and app... |
| [create-nested-bullet-numbered-lists-tagged-pdf](./create-nested-bullet-numbered-lists-tagged-pdf.cs) | Create Nested Bullet and Numbered Lists in a Tagged PDF | `Document`, `Page`, `TextFragment` | Demonstrates how to build a PDF containing a top‑level bullet list and a numbered list with a nes... |
| [create-pdf-with-heading-and-language](./create-pdf-with-heading-and-language.cs) | Create PDF with Heading Element and Language Attribute | `Document`, `ITaggedContent`, `SetLanguage` | Demonstrates how to create a new PDF, enable tagged content, set the document language, add a lev... |
| [create-tagged-3x4-table-in-pdf](./create-tagged-3x4-table-in-pdf.cs) | Create Tagged 3x4 Table in PDF | `Document`, `ITaggedContent`, `TableElement` | Demonstrates how to use Aspose.Pdf's Tagged Content API to add a 3‑row by 4‑column table with alt... |
| [create-tagged-pdf-table-with-merged-header](./create-tagged-pdf-table-with-merged-header.cs) | Create Tagged PDF Table with Merged Header Cells | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to tag a PDF table, add a header row with merged cells, assign the TH role, and ... |
| [create-tagged-pdf-with-toc](./create-tagged-pdf-with-toc.cs) | Create Tagged PDF with Table of Contents | `Document`, `ITaggedContent`, `HeaderElement` | Demonstrates how to generate a PDF, add tagged headings, configure a dedicated Table of Contents ... |
| [create-tagged-table-with-custom-tags](./create-tagged-table-with-custom-tags.cs) | Create Tagged Table with Custom DataType Tags and Validate P... | `Document`, `ITaggedContent`, `StructureElement` | The example loads a PDF, builds a tagged table structure, assigns custom data‑type tags to indivi... |
| [custom-table-cell-borders-by-row-index](./custom-table-cell-borders-by-row-index.cs) | Custom Table Cell Borders by Row Index | `Document`, `Page`, `Table` | Shows how to create a PDF table with Aspose.Pdf and apply different background colors (as a visua... |
| [enable-auto-tagging-save-tagged-pdf](./enable-auto-tagging-save-tagged-pdf.cs) | Enable Automatic Tagging and Save PDF as Tagged PDF | `Document`, `AutoTaggingSettings`, `ITaggedContent` | Demonstrates how to activate Aspose.Pdf's auto‑tagging feature, set basic language and title meta... |
| [export-pdf-structure-tree-to-json](./export-pdf-structure-tree-to-json.cs) | Export PDF Structure Tree to JSON | `Document`, `ITaggedContent`, `StructureElement` | Shows how to load a PDF, read its tagged logical structure with Aspose.Pdf, convert the hierarchy... |
| [export-structure-tree-to-xml-xsl-report](./export-structure-tree-to-xml-xsl-report.cs) | Export PDF Structure Tree to XML and Generate Report via XSL... | `Document`, `Save`, `XmlSaveOptions` | Loads a PDF with Aspose.Pdf, exports its logical structure tree to an XML file using XmlSaveOptio... |
| [export-tagged-pdf-content-to-json](./export-tagged-pdf-content-to-json.cs) | Export Tagged PDF Content to JSON | `Document`, `ITaggedContent`, `StructureElement` | Shows how to read a PDF's tagged structure with Aspose.Pdf, build a hierarchical representation, ... |
| [extract-notes-from-tagged-pdf](./extract-notes-from-tagged-pdf.cs) | Extract Notes from Tagged PDF to Text File | `Document`, `ITaggedContent`, `StructureElement` | Loads a PDF, accesses its tagged content, finds all NoteElement objects, concatenates their Actua... |
| [extract-pdf-links-to-csv](./extract-pdf-links-to-csv.cs) | Extract PDF Links to CSV | `Document`, `Page`, `Annotation` | Demonstrates how to load a PDF with Aspose.Pdf, iterate through its pages and link annotations, e... |
| [extract-text-from-tagged-pdf-structure](./extract-text-from-tagged-pdf-structure.cs) | Extract Text from Tagged PDF Structure Tree | `Document`, `ITaggedContent`, `StructureElement` | Demonstrates how to load a PDF, access its tagged content, and recursively traverse the logical s... |
| [filter-xml-missing-alt-text](./filter-xml-missing-alt-text.cs) | Filter XML Errors for Missing Alt Text |  | Shows how to load an XML validation report, query for errors of type "MissingAltText", and output... |
| ... | | | *and 15 more files* |

## Category Statistics
- Total examples: 45

## Category-Specific Tips

### Key API Surface
- `Aspose.Pdf.AttributeKey`
- `Aspose.Pdf.AttributeOwnerStandard`
- `Aspose.Pdf.BorderInfo`
- `Aspose.Pdf.BorderSide`
- `Aspose.Pdf.Color`
- `Aspose.Pdf.Document`
- `Aspose.Pdf.Document.Save`
- `Aspose.Pdf.Document.Validate`
- `Aspose.Pdf.FontRepository`
- `Aspose.Pdf.FontStyles`
- `Aspose.Pdf.HorizontalAlignment`
- `Aspose.Pdf.ITaggedContent`
- `Aspose.Pdf.ITaggedContent.CreateArtElement`
- `Aspose.Pdf.ITaggedContent.CreateDivElement`
- `Aspose.Pdf.ITaggedContent.CreateSectElement`

### Rules
- Obtain the tagged content interface via {doc}.TaggedContent and set metadata using {doc}.TaggedContent.SetTitle({string_literal}) and {doc}.TaggedContent.SetLanguage({string_literal}) before saving.
- Persist the PDF after configuring tagged metadata with {doc}.Save({output_pdf}).
- When creating a tagged PDF, retrieve the ITaggedContent from {doc}.TaggedContent, then call SetTitle({string_literal}) and SetLanguage({string_literal}) to define document metadata before adding any structure elements.
- To insert textual content, use ITaggedContent.CreateParagraphElement() to obtain a ParagraphElement, set its text with SetText({string_literal}), and attach it to the document hierarchy via ITaggedContent.RootElement.AppendChild({paragraph_element}).
- Persist the tagged PDF by invoking {doc}.Save({output_pdf}).

### Warnings
- The example creates an empty Document; real scenarios may need to add pages/content before saving.
- SetLanguage expects a BCP‑47 language tag (e.g., "en-US").
- Assumed fully qualified names for element classes (SectElement, DivElement, ArtElement) are in Aspose.Pdf.Tagged namespace; verify against the library version.
- StructureTextState properties are applicable only to elements that support text styling; ensure the element type (e.g., ParagraphElement) supports them.
- The example relies on default page creation; no explicit page handling is shown.

## General Tips
- See parent [AGENTS.md](../AGENTS.md) for:
  - **Boundaries** -- Always / Ask First / Never rules for all examples
  - **Common Mistakes** -- verified anti-patterns that cause build failures
  - **Domain Knowledge** -- cross-cutting API-specific gotchas
  - **Testing Guide** -- build and run verification steps
- Review code examples in this folder for accessibility-and-tagged-pdfs patterns

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Updated: 2026-08-20 | Run: `20260820_001147_12d7b3`
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